Ground state electronic
 configuration of atoms in core format
 Carbon (C): ): [He] 2s2, 2p2   
                                       or [He] 2s2, 2px13py13pz0
 Potassium (K):  Ar] 4s1
 Phosphorous (P): [Ne] 3s2, 3p3
 
 Valence shell electronic
 configuration
 Carbon (C): ): 3s2, 3p2
 Potassium (K):  4s1
 Phosphorous (P): 3s2, 3p3
 How you get the electronic configuration of
 an atom from the periodic table?